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Structured Information Extraction and Applications in Complex Reasoning
Structured Information Extraction and Applications in Complex Reasoning
Structured Information Extraction and Applications in Complex Reasoning

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자료유형  
 학위논문 서양
최종처리일시  
20250211153043
ISBN  
9798346764472
DDC  
020
저자명  
Su, Xin.
서명/저자  
Structured Information Extraction and Applications in Complex Reasoning
발행사항  
[Sl] : The University of Arizona, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
117 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-06, Section: B.
주기사항  
Advisor: Bethard, Steven.
학위논문주기  
Thesis (Ph.D.)--The University of Arizona, 2024.
초록/해제  
요약Structured information is generally easier to store, understand, and utilize compared to unstructured text. Extracting structured information from unstructured text and applying this extracted information to various tasks and use cases has been a longstanding research area. In this dissertation, we address both the extraction of structured information and its application to complex reasoning tasks.For structured information extraction, we focus on temporal information extraction, particularly on temporal normalization. Through systematic comparative experiments, we propose a strategy that enhances the generalization capability of time expression recognition systems-the crucial first step in the temporal normalization task-in new domains. Additionally, we introduce a semantic parsing framework based on large language models for end-to-end temporal expression recognition.Regarding the application of structured information, we focus on two tasks: temporal reasoning and open-domain multi-hop reasoning. In temporal reasoning, we combine extracted temporal graphs with Transformer-based question-answering systems, significantly improving their temporal reasoning capabilities. For the open-domain multi-hop reasoning task, we propose a semi-structured chain-of-thought approach that effectively integrates structured knowledge graphs, unstructured text, and parametric knowledge within large language models to answer knowledge-intensive questions.
일반주제명  
Information science
일반주제명  
Computer science
키워드  
Complex reasoning
키워드  
Natural language processing
키워드  
Question answering
키워드  
Time normalization
기타저자  
The University of Arizona Information
기본자료저록  
Dissertations Abstracts International. 86-06B.
전자적 위치 및 접속  
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MARC

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■020    ▼a9798346764472
■035    ▼a(MiAaPQ)AAI31639477
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a020
■1001  ▼aSu,  Xin.▼0(orcid)0000-0002-2712-2804
■24510▼aStructured  Information  Extraction  and  Applications  in  Complex  Reasoning
■260    ▼a[Sl]▼bThe  University  of  Arizona▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a117  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-06,  Section:  B.
■500    ▼aAdvisor:  Bethard,  Steven.
■5021  ▼aThesis  (Ph.D.)--The  University  of  Arizona,  2024.
■520    ▼aStructured  information  is  generally  easier  to  store,  understand,  and  utilize  compared  to  unstructured  text.  Extracting  structured  information  from  unstructured  text  and  applying  this  extracted  information  to  various  tasks  and  use  cases  has  been  a  longstanding  research  area.  In  this  dissertation,  we  address  both  the  extraction  of  structured  information  and  its  application  to  complex  reasoning  tasks.For  structured  information  extraction,  we  focus  on  temporal  information  extraction,  particularly  on  temporal  normalization.  Through  systematic  comparative  experiments,  we  propose  a  strategy  that  enhances  the  generalization  capability  of  time  expression  recognition  systems-the  crucial  first  step  in  the  temporal  normalization  task-in  new  domains.  Additionally,  we  introduce  a  semantic  parsing  framework  based  on  large  language  models  for  end-to-end  temporal  expression  recognition.Regarding  the  application  of  structured  information,  we  focus  on  two  tasks:  temporal  reasoning  and  open-domain  multi-hop  reasoning.  In  temporal  reasoning,  we  combine  extracted  temporal  graphs  with  Transformer-based  question-answering  systems,  significantly  improving  their  temporal  reasoning  capabilities.  For  the  open-domain  multi-hop  reasoning  task,  we  propose  a  semi-structured  chain-of-thought  approach  that  effectively  integrates  structured  knowledge  graphs,  unstructured  text,  and  parametric  knowledge  within  large  language  models  to  answer  knowledge-intensive  questions.
■590    ▼aSchool  code:  0009.
■650  4▼aInformation  science
■650  4▼aComputer  science
■653    ▼aComplex  reasoning
■653    ▼aNatural  language  processing
■653    ▼aQuestion  answering
■653    ▼aTime  normalization
■690    ▼a0723
■690    ▼a0984
■690    ▼a0800
■71020▼aThe  University  of  Arizona▼bInformation.
■7730  ▼tDissertations  Abstracts  International▼g86-06B.
■790    ▼a0009
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164765▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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